fopen函数对于文件的读定操作是专业的并且速度是非常的快了,有时我们没用用到数据库只用到了txt文件了,下面我们来看看fopen从100万条记录的文本文件取出重复数最多的前10条的例子。
100万条记录的文本文件,取出重复数最多的前10条。
示例文本:
098
123
234
789
……
234
678
654
123
$fp = fopen('文件', 'r'); while($buf = fgets($fp)) { $res[$buf]++; } fclose($fp); arsort($res); $res = array_keys(array_slice($res, 0, 10)); print_r($res); $a = file('文件'); $res = array_count_values($a); arsort($res); $res = array_keys(array_slice($res, 0, 10)); print_r($res);
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